EP3165784B1 - Motion assistance apparatus including a power transmitting device - Google Patents

Motion assistance apparatus including a power transmitting device Download PDF

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Publication number
EP3165784B1
EP3165784B1 EP16197231.0A EP16197231A EP3165784B1 EP 3165784 B1 EP3165784 B1 EP 3165784B1 EP 16197231 A EP16197231 A EP 16197231A EP 3165784 B1 EP3165784 B1 EP 3165784B1
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EP
European Patent Office
Prior art keywords
shaft
connecting link
link
assistance apparatus
input shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16197231.0A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3165784A1 (en
Inventor
Youngjin Park
Taesin Ha
Jeonghun Kim
Se-Gon Roh
Youn Baek Lee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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Filing date
Publication date
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Publication of EP3165784A1 publication Critical patent/EP3165784A1/en
Application granted granted Critical
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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/68—Operating or control means
    • A61F2/70—Operating or control means electrical
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H1/00—Apparatus for passive exercising; Vibrating apparatus; Chiropractic devices, e.g. body impacting devices, external devices for briefly extending or aligning unbroken bones
    • A61H1/02—Stretching or bending or torsioning apparatus for exercising
    • A61H1/0237—Stretching or bending or torsioning apparatus for exercising for the lower limbs
    • A61H1/0244—Hip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/06—Gearings comprising primarily only links or levers, with or without slides which can be made ineffective when desired
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • F16H21/10—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane
    • F16H21/44—Gearings comprising primarily only links or levers, with or without slides all movement being in, or parallel to, a single plane for conveying or interconverting oscillating or reciprocating motions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/50—Prostheses not implantable in the body
    • A61F2/68—Operating or control means
    • A61F2/70—Operating or control means electrical
    • A61F2002/701—Operating or control means electrical operated by electrically controlled means, e.g. solenoids or torque motors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H2003/005—Appliances for aiding patients or disabled persons to walk about with knee, leg or stump rests
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H3/00—Appliances for aiding patients or disabled persons to walk about
    • A61H2003/007—Appliances for aiding patients or disabled persons to walk about secured to the patient, e.g. with belts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/12—Driving means
    • A61H2201/1207—Driving means with electric or magnetic drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/12—Driving means
    • A61H2201/1207—Driving means with electric or magnetic drive
    • A61H2201/1215—Rotary drive
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/12—Driving means
    • A61H2201/1253—Driving means driven by a human being, e.g. hand driven
    • A61H2201/1261—Driving means driven by a human being, e.g. hand driven combined with active exercising of the patient
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/14—Special force transmission means, i.e. between the driving means and the interface with the user
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/14—Special force transmission means, i.e. between the driving means and the interface with the user
    • A61H2201/1436—Special crank assembly
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/1628—Pelvis
    • A61H2201/163—Pelvis holding means therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/164—Feet or leg, e.g. pedal
    • A61H2201/1642—Holding means therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/16—Physical interface with patient
    • A61H2201/1602—Physical interface with patient kind of interface, e.g. head rest, knee support or lumbar support
    • A61H2201/165—Wearable interfaces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5058—Sensors or detectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5058—Sensors or detectors
    • A61H2201/5061—Force sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5058—Sensors or detectors
    • A61H2201/5071—Pressure sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
    • A61H2201/50—Control means thereof
    • A61H2201/5058—Sensors or detectors
    • A61H2201/5084—Acceleration sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2205/00—Devices for specific parts of the body
    • A61H2205/10—Leg

Definitions

  • Example embodiments relate to a motion assistance apparatus including a power transmitting device.
  • motion assistance apparatuses enabling the elderly and/or patients having joint problems to walk with less effort.
  • motion assistance apparatuses increasing muscular strength of human bodies may be developed for military purposes.
  • FR 2208478 A5 discloses a power transmitting device with a driving shaft and a driven shaft. An energy source is used for submitting the rotation to the driving shaft.
  • the driving shaft is configured to rotate with respect a base.
  • US 2013/102398 A1 discloses a kind of power transmitting device with transmission joint, input link or shaft, an output link or output shaft, and a number of shafts or links therebetween.
  • JP 2004 344307 A discloses a motion assistance apparatus including a fixing module configured to be attached to a first portion of a user, a supporting module movable with respect to the fixing module, a driving module, and a power transmitting device, wherein the driving module provides power to be transmitted to the power transmitting device, said power transmitting device comprising: an input shaft configured to rotate with respect to the fixing module providing a base; and an output link configured to rotate with respect to the base, wherein the output link is connected to the supporting module, wherein the supporting module is configured to support a second portion of the user.
  • the output link and the input shaft are configured to rotate in a same direction.
  • the axial direction of the first shaft is orthogonal to the axial direction of the input shaft
  • the axial direction of the second shaft is orthogonal to the axial direction of the first shaft
  • an axial direction of the third shaft is orthogonal to the axial direction of the second shaft
  • an axial direction of the output link is orthogonal to the axial direction of the third shaft.
  • an axial direction of the third shaft is orthogonal to the axial direction of the input shaft.
  • an axial direction of the output link is orthogonal to the axial direction of the first shaft.
  • the power transmitting device may further include a locking device configured to maintain a relative angle formed by the second shaft with respect to said axial direction of the input shaft.
  • the locking device includes a stopper configured to move relative to the output link to restrict a movement of the second connecting link.
  • the locking device further includes a first elastic member configured to provide an elastic force to the stopper in a direction that restricts the movement of the second connecting link.
  • the power transmitting device further includes a second elastic member configured to provide an elastic force to the second connecting link to urge the second connecting link to separate from the stopper.
  • the stopper includes a stopper body associated with the first elastic member, the stopper body configured to slide with respect to the output link; and a grip associated with the stopper body, the grip configured to provide friction to a user when the user grips the grip.
  • the locking device includes a magnetic body configured to magnetically couple the output link to least one of the first connecting link and the second connecting link.
  • the power transmitting device further includes a sensor configured to sense information related to a load applied to at least one of the input shaft, the output link, the first shaft, the first connecting link, the second shaft, the second connecting link, and the third shaft; and a controller configured to control the locking device based on the information sensed by the sensor.
  • the controller is configured to release the locking device when a value of the information sensed by the sensor exceeds a threshold.
  • the locking device includes a stopper configured to restrict a movement of the second connecting link; a first elastic member configured to provide an elastic force to the stopper in a first direction such that the stopper restricts the movement of the second connecting link; and a solenoid configured to provide an electromagnetic force to the stopper to move the stopper in a second direction opposite to the first direction when a current is applied such that the movement of the second connecting link is unrestricted by the stopper.
  • a second elastic member configured to provide an elastic force to the second shaft such that the relative angle between the second shaft and the shaft of the input shaft changes when the locking device is released.
  • the second elastic member is configured to provide the elastic force to the second connecting link such that power transfer between the input shaft and the output link is blocked.
  • the second elastic member is configured to provide the elastic force to the second shaft such that the second shaft rotates in a same direction as the axial direction of the input shaft.
  • the locking device includes a control motor configured to adjust a rotation angle of the third shaft.
  • the plurality of connecting links transmit or block transmission of the power to the output link based on a rotation angle of the second connecting link.
  • the plurality of connecting links transmit the power to the output link when one of the plurality of connecting links is at a singular point.
  • the motion assistance apparatus includes a fixing device or module configured to attach to a first portion of a user; a support configured to support a second portion of the user; a driver configured to generate power; and a power transmitting device configured selectively transmit the power between the driver and the support, the power transmitting device including, an input link configured to receive the power from the driver; an output link connected to the support; and a plurality of connecting links connected between the input link and the output link, the plurality of connecting links configured to transmit or block transmission of the power to the output link based on a rotation angle of at least one of the plurality of connecting links.
  • the power transmitting device includes a plurality of rotatable links connected between a drive shaft of a motor and an output link, the plurality of rotatable links configured to selectively transmit a driving torque from the motor to the output link based on a relative angle between the drive shaft and at least one of the plurality of rotatable links.
  • the plurality of rotatable links includes at least a first rotatable link and a second rotatable link, the first rotatable link configured to pivot about the drive shaft via a first shaft to change the relative angle between the drive shaft and the second rotatable link.
  • an axial direction of the first shaft is orthogonal to an axial direction of the drive shaft.
  • the second rotatable link has a second shaft penetrating therethrough and attached to the first rotatable link.
  • the first rotatable link is configured to pivot between a first position in which the first rotatable link transmits a driving torque generated by the drive shaft to the second rotatable link and a second position in which the first rotatable link does not transmit the driving torque to the second rotatable link.
  • the first rotatable link in the second position, is configured spin about the second shaft such that the driving torque is not transmitted to the second rotatable link.
  • the drive shaft and the second shaft are aligned.
  • the drive shaft and the second shaft are aligned such that the axial direction of the drive shaft is same as the axial direction of the second shaft.
  • the first rotating link and the second rotating link remain connected.
  • the power transmitting device further includes a releasable lock configured to selectively lock the first rotatable link at a first one of the first position and the second position.
  • the power transmitting device further includes a spring configured to rotate the first rotatable link to a second one of the first position and the second position, if the releasable lock is unlocked.
  • the power transmitting device further includes a sensor configured to sense a force applied by the drive shaft to one or more of the plurality of rotatable links; and a controller configured generate an instruction to unlock the releasable lock, if the force exceeds a threshold.
  • the power transmitting device further includes a solenoid configured to unlock the lock in response to the instruction from the controller.
  • the motion assistance apparatus includes a belt configured to attach to a waist of a user; a driver attached to the belt, the driver including the motor configured to generate the power; a support configured to be fixed to a limb of the user to assist a movement of the limb; and a power transmitting device configured to selectively transmit the power from the driver to the support via the output link.
  • the motion assistance apparatus further includes a sensor configured to sense information associated with a movement of the user; and a controller configured, determine whether the user is experiencing difficulty moving based on the information, and transmit an instruction to the power transmitting device to transmit the driving torque, if the user is experiencing difficulty moving.
  • first, second, A, B, (a), (b), and the like may be used herein to describe components.
  • Each of these terminologies is not used to define an essence, order or sequence of a corresponding component but used merely to distinguish the corresponding component from other component(s). It should be noted that if it is described in the specification that one component is “connected”, “coupled”, or “joined” to another component, a third component may be “connected”, “coupled”, and “joined” between the first and second components, although the first component may be directly connected, coupled or joined to the second component.
  • Example embodiments may be described with reference to acts and symbolic representations of operations (e.g., in the form of flow charts, flow diagrams, data flow diagrams, structure diagrams, block diagrams, etc.) that may be implemented in conjunction with units and/or devices discussed in more detail below.
  • a function or operation specified in a specific block may be performed differently from the flow specified in a flowchart, flow diagram, etc.
  • functions or operations illustrated as being performed serially in two consecutive blocks may actually be performed simultaneously, or in some cases be performed in reverse order.
  • Units and/or devices may be implemented using hardware, software, and/or a combination thereof.
  • hardware devices may be implemented using processing circuitry such as, but not limited to, a processor, Central Processing Unit (CPU), a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a System-on-Chip (SoC), a programmable logic unit, a microprocessor, or any other device capable of responding to and executing instructions in a defined manner.
  • processing circuitry such as, but not limited to, a processor, Central Processing Unit (CPU), a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable gate array (FPGA), a System-on-Chip (SoC), a programmable logic unit, a microprocessor, or any other device capable of responding to and executing instructions in a defined manner.
  • Software may include a computer program, program code, instructions, or some combination thereof, for independently or collectively instructing or configuring a hardware device to operate as desired.
  • the computer program and/or program code may include program or computer-readable instructions, software components, software modules, data files, data structures, and/or the like, capable of being implemented by one or more hardware devices, such as one or more of the hardware devices mentioned above.
  • Examples of program code include both machine code produced by a compiler and higher level program code that is executed using an interpreter.
  • a hardware device is a computer processing device (e.g., a processor, Central Processing Unit (CPU), a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a microprocessor, etc.)
  • the computer processing device may be configured to carry out program code by performing arithmetical, logical, and input/output operations, according to the program code.
  • the computer processing device may be programmed to perform the program code, thereby transforming the computer processing device into a special purpose computer processing device.
  • the processor becomes programmed to perform the program code and operations corresponding thereto, thereby transforming the processor into a special purpose processor.
  • Software and/or data may be embodied permanently or temporarily in any type of machine, component, physical or virtual equipment, or computer storage medium or device, capable of providing instructions or data to, or being interpreted by, a hardware device.
  • the software also may be distributed over network coupled computer systems so that the software is stored and executed in a distributed fashion.
  • software and data may be stored by one or more computer readable recording mediums, including the tangible or non-transitory computer-readable storage media discussed herein.
  • computer processing devices may be described as including various functional units that perform various operations and/or functions to increase the clarity of the description.
  • computer processing devices are not intended to be limited to these functional units.
  • the various operations and/or functions of the functional units may be performed by other ones of the functional units.
  • the computer processing devices may perform the operations and/or functions of the various functional units without sub-dividing the operations and/or functions of the computer processing units into these various functional units.
  • Units and/or devices may also include one or more storage devices.
  • the one or more storage devices may be tangible or non-transitory computer-readable storage media, such as random access memory (RAM), read only memory (ROM), a permanent mass storage device (such as a disk drive), solid state (e.g., NAND flash) device, and/or any other like data storage mechanism capable of storing and recording data.
  • the one or more storage devices may be configured to store computer programs, program code, instructions, or some combination thereof, for one or more operating systems and/or for implementing the example embodiments described herein.
  • the computer programs, program code, instructions, or some combination thereof may also be loaded from a separate computer readable storage medium into the one or more storage devices and/or one or more computer processing devices using a drive mechanism.
  • a separate computer readable storage medium may include a Universal Serial Bus (USB) flash drive, a memory stick, a Blu-ray/DVD/CD-ROM drive, a memory card, and/or other like computer readable storage media.
  • the computer programs, program code, instructions, or some combination thereof may be loaded into the one or more storage devices and/or the one or more computer processing devices from a remote data storage device via a network interface, rather than via a local computer readable storage medium.
  • the computer programs, program code, instructions, or some combination thereof may be loaded into the one or more storage devices and/or the one or more processors from a remote computing system that is configured to transfer and/or distribute the computer programs, program code, instructions, or some combination thereof, over a network.
  • the remote computing system may transfer and/or distribute the computer programs, program code, instructions, or some combination thereof, via a wired interface, an air interface, and/or any other like medium.
  • the one or more hardware devices, the one or more storage devices, and/or the computer programs, program code, instructions, or some combination thereof, may be specially designed and constructed for the purposes of the example embodiments, or they may be known devices that are altered and/or modified for the purposes of example embodiments.
  • a hardware device such as a computer processing device, may run an operating system (OS) and one or more software applications that run on the OS.
  • the computer processing device also may access, store, manipulate, process, and create data in response to execution of the software.
  • OS operating system
  • a hardware device may include multiple processing elements and multiple types of processing elements.
  • a hardware device may include multiple processors or a processor and a controller.
  • other processing configurations are possible, such as parallel processors.
  • FIG. 1 is a perspective view illustrating a power transmitting device being in a power transmitting state according to example embodiments
  • FIG. 2 is a diagram illustrating the power transmitting device being in the power transmitting state according to example embodiments
  • FIG. 3 is a view illustrating an operation of the power transmitting device being in the power transmitting state according to example embodiments.
  • FIG. 4 is a perspective view illustrating the power transmitting device being in a power blocking state according to example embodiments
  • FIG. 5 is a diagram illustrating the power transmitting device being in the power blocking state according to example embodiments
  • FIG. 6 is a view illustrating an operation of the power transmitting device 10 being in the power blocking state according to example embodiments.
  • a power transmitting device 10 includes an input shaft 120, a first shaft 125, a first connecting link 130, a second shaft 135, a second connecting link 140, a third shaft 145, and an output link 150. Based on a power transmission order, the input shaft 120, the first shaft 125, the first connecting link 130, the second shaft 135, the second connecting link 140, the third shaft 145, and the output link 150 may be sequentially connected to each other.
  • the input shaft 120 rotates with respect to a base 110.
  • the input shaft 120 receives power from a driving motor M provided in the base 110.
  • the first shaft 125 is connected to the input shaft 120 in a direction intersecting, for example, orthogonal to, an axial direction of the input shaft 120.
  • the first shaft 125 is an independent member capable of rotating with respect to two adjacent links, for example, the input shaft 120 and the first connecting link 130.
  • the first shaft 125 is a member attached to one of the input shaft 120 and the first connecting link 130 and capable of rotating relative to the other of the input shaft 120 and the first connecting link 130.
  • the first connecting link 130 is connected to the first shaft 125 and rotates relative to the input shaft 120.
  • the second shaft 135 is connected to the first connecting link 130 in a direction intersecting, for example, orthogonal to, an axial direction of the first shaft 125.
  • the second connecting link 140 is connected to the second shaft 135 and rotates relative to the first connecting link 130.
  • the third shaft 145 is connected to the second connecting link 140 in a direction intersecting, for example, orthogonal to, an axial direction of the second shaft 135.
  • An axial direction of the third shaft 145 intersects the axial direction of the input shaft 120, for example, in an orthogonal direction.
  • the output link 150 rotates with respect to the base 110.
  • the output link 150 and the input shaft 120 rotate in the same direction.
  • the shaft of the output link 150 matches the shaft of the input shaft 120.
  • the axial direction of the output link 150 intersects the axial direction of the third shaft 145, for example, in an orthogonal direction.
  • the axial direction of the output link 150 may intersect the axial direction of the first shaft 125, for example, in an orthogonal direction.
  • the bent polygonal shapes of the input shaft 120, the first connecting link 130, the second connecting link 140, and the output link 150 of FIGS. 1 through 6 are examples, and the input link 120, the first connecting link 130, the second connecting link 140, and the output link 150 may be provided in desired (or, alternatively, predetermined) shapes, for example, doughnut shapes, circular shapes, or spherical shapes.
  • each pair of adjacent shafts based on the power transmission order, among the shaft of the input shaft 120, the first shaft 125, the second shaft 135, the third shaft 145, and the shaft of the output link 150, are orthogonal to each other.
  • Power input into the input shaft 120 may be either transmitted to the output link 150 or blocked based on a rotation angle of the second connecting link 140. In detail, based on whether the axial direction of the input shaft 120 matches the axial direction of the second shaft 135, the power input into the input shaft 120 may be transmitted to the output link 150 or blocked.
  • the axial direction of the input shaft 120 does not match the axial direction of the second shaft 135.
  • the input shaft 120 and the output link 150 performs a single rigid body motion.
  • the axial direction of the input shaft 120 matches the axial direction of the second shaft 135.
  • the power input into the input shaft 120 is transmitted to only components disposed between the input shaft 120 and the second shaft 135, and is not transmitted to components connected after the second shaft 135 between the input shaft 120 and the output link 150.
  • the input power is used to rotate the input shaft 120 and the first connecting link 130, and does not rotate the second connecting link 140 and the output link 150.
  • the power is blocked.
  • a moment of inertia applied to the driving motor M may be maximized.
  • the moment of inertia applied to the driving motor M may be minimized.
  • the shafts of the input shaft 120, the first connecting link 130, the second connecting link 140, and the output link 150 may be automatically arranged to be in the state in which the moment of inertia decreases, for example, in the state shown in FIGS. 4 through 6 .
  • the state of the power transmitting device 10 shown in FIGS. 1 through 3 may be referred to as being at a singular point.
  • the second connecting link 140 is at the singular point, the power input into the input shaft 120 is transmitted to the output link 150.
  • the second connecting link 140 is away from the singular point, the power is blocked.
  • the power transmitting device 10 may include any configuration including a plurality of connecting links connected between an input shaft and an output link and capable of transmitting or blocking power based on a rotation angle of one of the plurality of connecting links.
  • the power transmitting device 10 may include any configuration including a plurality of connecting links connected between an input shaft and an output link and capable of transmitting or blocking power based on a rotation angle of one of the plurality of connecting links.
  • the power transmitting device 10 switches between transmitting and blocking power through a structural change, rather than completely separating a portion of the plurality of components associated therewith. Dissimilar to a method of selectively transmitting power using a frictional force, for example, a clutch, the power transmitting device 10 does not require a bulky configuration to endure a frictional force, and thus may be miniaturized. Further, the power transmitting device 10 increases energy efficiency by reducing energy that would be wasted if the power was blocked using a frictional energy. In addition, because the frictional force to block power is not be applied, the durability of the power transmitting device 10 increases and the lifespan of a product including the power transmitting device 10 increases. The power transmitting device 10 is relatively easily manufactured, and has advantages in terms of relatively lower failure and maintenance.
  • the power transmitting device 10 does not require a clearance for separation and coupling. Thus, backlash does not occur due to the reengaging of gears. Since backlash does not need to be considered, the power transmitting device 10 is easily designed and controlled more accurately. For example, the power transmitting device 10 is used for a robot arm which requires precise control.
  • FIG. 7 is a perspective view illustrating a power transmitting device according to other example embodiments.
  • a power transmitting device 20 includes the input shaft 120, the first shaft 125, the first connecting link 130, the second shaft 135, the second connecting link 140, the third shaft 145, the output link 150, and a locking device 260.
  • the locking device 260 maintains an angle of the second connecting link 140.
  • the locking device 260 maintains a relative angle formed by the second shaft 135 with respect to the shaft of the input shaft 120.
  • the locking device 260 maintains a state in which power is transmitted from the input shaft 120 to the output link 150.
  • the locking device 260 maintains a state in which the axial direction of the input shaft 120 does not match the axial direction of the second shaft 135.
  • the locking device 260 restricts the power transmitting device 10 to stay at a singular point.
  • the locking device 260 includes a stopper 262 and a first elastic member 264.
  • the stopper 262 moves relative to the output link 150, and restricts a movement of the second connecting link 140.
  • the stopper 262 is disposed on one side of the output link 150, and move upward in FIG. 7 to be inserted into a recess formed on a bottom of the second connecting link 140, thereby fixing the second connecting link 140.
  • the first elastic member 264 provides an elastic force to the stopper 262 such that the stopper 262 restricts the movement of the second connecting link 140.
  • the first elastic member 264 is a compression spring configured to pressurize the stopper 262 upward in FIG. 7 .
  • the power transmitting device 20 may further include a second elastic member 270.
  • the second elastic member 270 provides an elastic force to the second shaft 135 such that the relative angle formed by the second shaft 135 with respect to the shaft of the input shaft 120 changes when the locking device 260 is released.
  • the second elastic member 270 provides an elastic force to the second connecting link 140 such that the second connecting link 140 moves to be separated from the stopper 262.
  • the second elastic member 270 provides the elastic force to the second connecting link 140 to move the second connecting link 140 such that power is blocked.
  • the second elastic member 270 provides the elastic force to rotate the second connecting link 140 such that the axial direction of the second shaft 135 is the same as the axial direction as the input link 120.
  • the second elastic member 270 is provided in the third shaft 145.
  • the second elastic member 270 is a torsion spring configured to provide an elastic force to rotate the second connecting link 140 clockwise based on a z axis such that the second shaft 135 has a same axial direction as the axial direction of the input shaft 120.
  • the second elastic member 270 rapidly moves the second connecting link 140, thereby relatively rapidly blocking power. Further, to move the second connecting link 140 in a power transmitting direction, the second connecting link 140 is to be moved using a force greater than the elastic force of the second elastic member 270. Thus, unintended power transmission by a mistake of a user or a malfunction of the apparatus may be prevented.
  • FIG. 8 is a perspective view illustrating a power transmitting device according to other example embodiments.
  • a locking device 260' of a power transmitting device 20' maintains a state in which power to be transmitted from the input shaft 120 to the output link 150 is blocked.
  • the locking device 260' maintains a state in which the axial direction of the input shaft 120 matches the axial direction of the second shaft 135.
  • a second elastic member 270' of the power transmitting device 20' provides an elastic force to the second connecting link 140 such that power may be transmitted.
  • the second elastic member 270' is provided in the third shaft 145.
  • the second elastic member 270' is a torsion spring configured to provide an elastic force to rotate the second connecting link 140 counterclockwise based on a z axis.
  • FIG. 9 is a perspective view illustrating a power transmitting device according to other example embodiments.
  • a power transmitting device 30 includes the input shaft 120, the first shaft 125, the first connecting link 130, the second shaft 135, the second connecting link 140, the third shaft 145, the output link 150, and a locking device 360.
  • the locking device 360 includes a stopper 362 and a first elastic member 364.
  • the stopper 362 includes a stopper body 3621 connected to the first elastic member 364 and configured to slide with respect to the output link 150, and a grip 3622 connected to the stopper body 3621 and to be gripped by a user. As necessary, the user moves the stopper 362 by controlling the grip 3622 to transmit power from the input shaft 120 to the output link 150 or block the power. In detail, the user may manually control the stopper 362 to switch the power transmitting device 30 between the power transmitting state and the blocking state.
  • FIG. 10 is a front view illustrating a power transmitting device according to other example embodiments
  • FIG. 11 is a side view illustrating the power transmitting device 40 according to other example embodiments.
  • a power transmitting device 40 includes the input shaft 120, the first shaft 125, the first connecting link 130, the second shaft 135, the second connecting link 140, the third shaft 145, the output link 150, and a locking device 460.
  • the locking device 460 fixes the first connecting link 130 or the second connecting link 140 using magnetism.
  • the locking device 460 is provided in the output link 150.
  • the locking device 460 includes at least one magnetic body to be magnetically coupled to at least one of the first connecting link 130 and the second connecting link 140.
  • the locking device 460 includes a first magnetic body 462 configured to magnetically couple the second connecting link 140 to the output link 150 at a position of a power transmitting state, and a first metal tip 464 provided in the second connecting link 140 at a position corresponding to the position of the first magnetic body 462.
  • the positions of the first magnetic body 462 and the first metal tip 464 may be reversed.
  • the second connecting link 140 is a conductor
  • the first metal tip 464 is omitted.
  • a material of the second connecting link 140 is freely selected such that the second connecting link 140 may be formed of non-magnetic materials.
  • the locking device 460 includes a second magnetic body 466 configured to magnetically couple the first connecting link 130 to the output link 150 in a position of the power transmitting state, and a second metal tip 468 provided in the first connecting link 130 at a position corresponding to the position of the second magnetic body 466.
  • FIG. 12 is a view illustrating a power transmitting device according to other example embodiments.
  • the power transmitting device 50 includes the input shaft 120, the first shaft 125, the first connecting link 130, the second shaft 135, the second connecting link 140, the third shaft 145, the output link 150, a locking device 560, a sensor 580, and a controller 590.
  • the locking device 560 transmits or blocks power based on whether a current is applied.
  • the locking device 560 includes the stopper 262, the first elastic member 264, and a solenoid 566.
  • the stopper 262 restricts a movement of the second connecting link 140.
  • the first elastic member 264 provides an elastic force in a first direction in which the stopper 262 restricts the movement of the second connecting link 140.
  • the solenoid 566 provides an electromagnetic force to the stopper 262 such that the stopper 262 may move in a direction in which the stopper 262 does not restrict the movement of the second connecting link 140, in detail, in a second direction opposite to the first direction, when a current is applied.
  • the sensor 580 senses information related to a load applied to at least one of the input shaft 120, the first shaft 125, the first connecting link 130, the second shaft 135, the second connecting link 140, the third shaft 145, and the output link 150.
  • the sensor 580 includes a strain gauge attached to at least one of the input shaft 120, the first shaft 125, the first connecting link 130, the second shaft 135, the second connecting link 140, the third shaft 145, and the output link 150.
  • the sensor 580 includes a pressure sensor attached between two adjoining components to measure a pressure applied between the two components.
  • the type of the sensor 580 is not limited thereto.
  • the sensor 580 may include any device capable of sensing information related to loads applied to the components of the power transmitting device 50.
  • the controller 590 controls the locking device 560 based on the information sensed by the sensor 580.
  • the controller 590 releases the locking device 560 when a value of the information sensed by the sensor 580 exceeds a set value (or, alternatively, a desired threshold).
  • the controller 590 prevents an excessive load applied to the components of the power transmitting device 50, whereby damage to the power transmitting device 50 may be prevented and user safety may improve.
  • FIG. 13 is a view illustrating a power transmitting device according to other example embodiments.
  • a power transmitting device 60 includes the input shaft 120, the first shaft 125, the first connecting link 130, the second shaft 135, the second connecting link 140, the third shaft 145, the output link 150, a locking device 660, and a controller 690.
  • the locking device 660 includes a control motor 662 configured to adjust a rotation angle of the third shaft 145.
  • the control motor 662 adjusts a rotation angle of a motor shaft in response to a signal received from the controller 690.
  • the control motor 662 includes, for example, a servo-motor configured to control a position.
  • the control motor 662 includes, for example, an encoder configured to measure the rotation angle of the motor shaft.
  • the locking device 660 further includes a decelerator 664 configured to connect the control motor 662 and the third shaft 145 together. By the decelerator 664, the rotation angle of the third shaft 145 is adjusted more precisely.
  • the controller 690 controls the control motor 662 to transmit power input into the input shaft 120 to the output link 150 or block the power.
  • the controller 690 receives information related to the rotation angle of the third shaft 145 from the encoder provided in the control motor 662, and controls the control motor 662 based on the received information.
  • FIG. 14 is a view illustrating a motion assistance apparatus according to example embodiments.
  • a motion assistance apparatus 1 is worn by a user to assist a motion of the user.
  • the user may correspond to a human, an animal, or a robot. However, the user is not limited thereto.
  • FIG. 14 illustrates a case in which the motion assistance apparatus 1 assists motions of thighs of the user
  • the motion assistance apparatus 1 may also assist a motion of an upper body, for example, a hand, an upper arm, and a lower arm of the user.
  • the motion assistance apparatus 1 may assist a motion of another part of a lower body, for example, a foot, and a calf of the user.
  • the motion assistance apparatus 1 may assist a motion of a part of the user.
  • a case in which the motion assistance apparatus 1 assists motions of thighs of a human will be described. However, example embodiments are not limited thereto.
  • the motion assistance apparatus 1 includes a fixing module 11, a driving module 13, the power transmitting device 10, and a supporting module 15.
  • the driving module 13, the power transmitting device 10 and the supporting module 15 may be provided in plural and a first one of the driving module 13, the power transmitting device 10 and the supporting module 15 may be associated with one leg of the user, and a second one of the driving module 13, the power transmitting device 10 and the supporting module 15 may be associated with another leg of the user.
  • the fixing module 11 is attached to the user.
  • the fixing module 11 covers an outer surface of the user.
  • the fixing module 11 is attached to the sides of a waist of the user, and include a curved surface corresponding to a contact portion of the user.
  • the driving module 13 provides power to be transmitted to the power transmitting device 10.
  • the driving module 13 may be disposed in a lateral direction of the power transmitting device 10 such that a rotation axis of the driving module 13 may be spaced apart from a rotation axis of the power transmitting device 10.
  • a protruding height from the user may relatively decrease.
  • the driving module 13 may be more spaced apart from the power transmitting device 10.
  • a power transmitting module is additionally provided to transmit power from the driving module 13 to the power transmitting device 10.
  • the power transmitting module is a rotary body such as, for example, a gear, or a longitudinal member such as, for example, a wire, a cable, a string, a rubber band, a spring, a belt, and a chain.
  • the power transmitting device 10 receives power from the driving module 13, and transmits the power to the supporting module 15 to assist a motion of a joint portion of the user.
  • the power transmitting device 10 is disposed on one side of the fixing module 11 at a position corresponding to the joint portion of the user.
  • An input end of the power transmitting device 10 is connected to the driving module 13, and an output end of the power transmitting device 10 is connected to the supporting module 15.
  • the power transmitting device 10 includes an input link configured to rotate with respect to the fixing module 11 and receives power from the driving module 13, an output link configured to rotate with respect to the fixing module 11 and transmit the power to the supporting module 15, and a plurality of connecting links connected between the input link and the output link.
  • the power generated by the driving module 13 is transmitted to the output link or blocked based on a rotation angle of one of the plurality of connecting links.
  • the user safety is improved. Further, the power is transmitted at a singular point, and thus a response rate improves in that the power is blocked rapidly.
  • the output link freely rotates without being affected by moments of inertia of the input link and a rotor of the driving module 13 connected to the input link.
  • the usability of the motion assistance apparatus 1 increases.
  • an effect of the weight of the motion assistance apparatus 1 is tested while excluding an effect of an assistance force, and thus the product test is easily performed.
  • the supporting module 15 may support another portion of the user, for example, a thigh of the user, and assist a motion of a lower limb of the user.
  • the supporting module 15 includes a connecting member 15a, a power transmitting frame 15b, an applying member 15c, and a supporting member 15d.
  • the connecting member 15a is hinge-connected to, for example, the power transmitting device 10.
  • a hinge axis of the connecting member 15a is disposed in a direction intersecting, for example, orthogonal to, a shaft of the output link of the power transmitting device 10.
  • the supporting module 15 performs a two degree of freedom (DOF) motion with respect to the fixing module 11.
  • DOF two degree of freedom
  • the power transmitting frame 15b transmits force to a portion of the user.
  • One end portion of the power transmitting frame 15b is rotatably connected to the connecting member 15a, and another end portion of the power transmitting frame 15b is connected to the applying member 15c to transmit force to a portion of the user.
  • the power transmitting frame 15b may push or pull a thigh of the user.
  • the power transmitting frame 15b extends and bends in a longitudinal direction of the thigh of the user to cover a portion of a circumference of the thigh of the user.
  • the one end portion of the power transmitting frame 15b is disposed on a side surface of the thigh of the user, and the other portion of the power transmitting frame 15b is disposed on a front surface of the thigh of the user.
  • a surface on the side of the one end portion of the power transmitting frame 15b is orthogonal to a surface on the side of the other end portion of the power transmitting frame 15b.
  • the power transmitting frame 15b is movably connected to the connecting member 15a.
  • a total length from the power transmitting device 10 to the applying member 15c is variable.
  • the supporting module 15 performs a three DOF motion with respect to the fixing module 11.
  • the applying member 15c is connected to the other end portion of the power transmitting frame 15b to apply force to a portion of the user.
  • the applying member 15c is disposed along the front surface of the thigh of the user, or in a circumferential direction of the thigh of the user to push or pull the thigh of the user.
  • the applying member 15c includes a curved surface corresponding to the thigh of the user, and is configured to extend from the other end portion of the power transmitting frame 15b toward both sides of the power transmitting frame 15b.
  • the supporting member 15d is connected to one side of the applying member 15c.
  • the supporting member 15d is disposed to cover a circumference of at least a portion of the thigh of the user, thereby preventing separation of the thigh of the user from the power transmitting frame 15b.
  • an additional driving module and/or supporting module may be provided.
  • the supporting module 15 extends to a knee, and an additional joint device is provided in the supporting module 15 at a position corresponding to a knee joint.
  • an additional supporting module may be connected to the additional joint device.
  • the additional supporting module supports a calf of the user, thereby assisting a motion of the calf.
  • an actuator configured to drive the additional joint device is disposed on one side of the additional joint device, or is disposed in, for example, the fixing module 11, to be spaced apart from the additional joint device.
  • FIG. 15 illustrates a controller of a motion assistance apparatus according to example embodiments.
  • a controller 1500 includes a memory 1510, a processor 1520, an input/output (I/O) device 1530, and a bus 1540 connecting same.
  • the controller 1500 is mounted on, for example, the fixing module 11.
  • the controller 1500 is an example of one or more of the controller 590 illustrated in FIG. 12 or the controller 690 illustrated in FIG. 13 .
  • the I/O device 1530 includes transmitters and/or receivers.
  • the transmitters includes hardware and any necessary software for transmitting signals including, for example, data signals and/or control signals to the driver 13 and/or the power transmission device 10.
  • the receivers includes hardware and any necessary software for receiving signals including, for example, data signals and/or control signals from one or more sensors, for example, the sensor 580.
  • the memory 1510 is a non-volatile memory, a volatile memory, a hard disk, an optical disk, and a combination of two or more of the above-mentioned devices.
  • the memory is a non-transitory computer readable medium.
  • the non-transitory computer-readable media may also be a distributed network, so that the program instructions are stored and executed in a distributed fashion.
  • the non-volatile memory is a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Programmable Read Only Memory (EPROM), or a flash memory.
  • the volatile memory is a Random Access Memory (RAM).
  • the processor 1520 is implemented by at least one semiconductor chip disposed on a printed circuit board.
  • the processor 1520 may be an arithmetic logic unit, a digital signal processor, a microcomputer, a field programmable array, a programmable logic unit, a microprocessor or any other device capable of responding to and executing instructions in a defined manner.
  • the processor 1520 is programmed with instructions that configure the processor 1520 into a special purpose computer to perform the operations illustrated in one or more of FIGS. 16 , 17A and 17B , discussed below.
  • the processor 1620 transmits, via the I/O device 1530, control instructions to control the driver 13 and/or power transmission device 10 based on information provided by the sensors.
  • the processor 1520 may transmit control instructions to the power transmission device 10 to selectively unlock a lock associated with the power transmission device based on a force sensed by one or more of the sensors, for example, the sensor 580.
  • the processor 1520 receives, via the I/O device 1530, signals from one or more sensors including information associated with a movement of the wearer.
  • the sensors are pressure sensors located on a sole of the wearer, potentiometer that senses joint angles or joint angular velocities, or an inertial measurement unit (IMU) sensor that measures acceleration information while the user is ambulatory.
  • the processor 1520 determines that the wearer is walking with difficulty, for example, that the wearer is moving slower than a normal pace associated with the wearer, based on the information from the sensors, and transmits a control instruction to the power transmission device 10 to selectively transmit the power from the driving module 13 to the support 15 if the user is experiencing difficulty walking.
  • FIG. 16 illustrates a method of controlling a motion assistance apparatus according to example embodiments.
  • the controller 1500 may initialize.
  • the controller 1500 receives data from one or more sensors.
  • the controller 1500 receives, via the I/O device 1530, data from the sensor 580 and/or pressure sensors located on a sole of the user.
  • the controller 1500 determines whether the data indicates a locking/unlocking condition is satisfied.
  • the controller 1500 transmits an instruction to control the power transmitting device based on a whether the locking/unlocking condition is satisfied. For example, the controller 1500 transmits, via the I/O deice 1530, an instruction to set the power transmitting device 10 to one of the power transmitting state and the power blocking state based on whether the locking or unlocking condition is satisfied.
  • FIGS. 17A and 17B illustrate methods of controlling a motion assistance apparatus according to example embodiments.
  • the controller 1500 determines that a load applied to components of the power transmitting device 10 exceeds a threshold based on the data received from the sensors in operation 1620.
  • the controller 1500 transmits an instruction to move the power transmitting device 10 to a power blocking state, if the controller 1500 determines that the load exceeds the threshold. Therefore, the controller 1500 protects the motion assistance apparatus 1 by preventing an excessive load applied thereto.
  • the controller 1500 determines whether the user is walking with difficulty based on the data received from the sensors in operation 1620. In operation 1740b, the controller 1500 transmits an instruction to move the power transmitting device 10 to a power transmitting state, if the controller 1500 determines that the user is walking with difficulty. Therefore, the controller 1500 allows the motion assistance apparatus 1 to automatically assist the user with motion.

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EP16197231.0A 2015-11-05 2016-11-04 Motion assistance apparatus including a power transmitting device Active EP3165784B1 (en)

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KR102399605B1 (ko) 2022-05-18
CN106667726B (zh) 2021-05-11
JP2017086873A (ja) 2017-05-25
KR20170052972A (ko) 2017-05-15
US10828224B2 (en) 2020-11-10
US20170128312A1 (en) 2017-05-11
EP3165784A1 (en) 2017-05-10
CN106667726A (zh) 2017-05-17

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